Convert pounds per square inch (psi) to megapascals (MPa).
Pressure converter
Instant conversion
Edit either value. Decimals and scientific notation supported.
1
psi
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PascalPa
KilopascalkPa
MegapascalMPa
Barbar
Millibarmbar
HectopascalhPa
Standard atmosphereatm
Pounds per square inchpsi
TorrTorr
Conventional millimetre of mercurymmHg
No units found. Try a name or symbol.
0.006894757293
MPa
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PascalPa
KilopascalkPa
MegapascalMPa
Barbar
Millibarmbar
HectopascalhPa
Standard atmosphereatm
Pounds per square inchpsi
TorrTorr
Conventional millimetre of mercurymmHg
No units found. Try a name or symbol.
CONVERSION
1 psi ≈ 0.006894757293 MPa
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAMPa = psi × 0.00689475729316836
FORMULA & EXAMPLES
How to convert Pounds per square inch to megapascals
MPa = psi × 0.00689475729316836
Multiply the psi reading by 0.00689475729316836.
Worked examples
1 psi ≈ 0.006894757293 MPa
1 × 0.00689475729316836 ≈ 0.006894757293
30 psi ≈ 0.2068427188 MPa
30 × 0.00689475729316836 ≈ 0.2068427188
Frequently asked questions
Does psi to MPa change gauge pressure into absolute pressure?
No. Unit conversion preserves the original pressure reference. Converting a gauge reading to absolute pressure additionally requires the applicable atmospheric pressure.
Pounds per square inch to megapascals table
Fixed reference · Pounds per square inch to Megapascal
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
Pounds per square inch (psi)
Megapascal (MPa)
0
0
0.1
0.0006894757293
0.5
0.003447378647
1
0.006894757293
2
0.01378951459
5
0.03447378647
10
0.06894757293
25
0.1723689323
50
0.3447378647
100
0.6894757293
1000
6.894757293
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.